백준 1008번 A/B

import java.util.Scanner;

public class Main {

	    public static void main(String[] args){
	        Scanner sc = new Scanner(System.in);
	        double a = sc.nextDouble();
	        double b = sc.nextDouble();
	        System.out.print(a/b);
	    }
	
}

* 오차범위 => double 형 이용